Will try factory reset. If you don't hear back from me, I have majorly stuffed up after reset. :)

It won't stuff anything up, it just makes it better. Don't know why. All my Huawei routers play up when I get them until I factory reset them then they work just fine. Not awesome, but as you'd expect.

I have about 20 access points around that I pickup and run my access point at 40MHz channel width but I did an analysis of the channels/traffic in use and found that there was little between channels 2 and 5 so opted for channel 3 and it's sweet.

Running a 2.4GHz AP at 40MHz is IMO inconsiderate in an urban area. The channel width is so wide it can knock out just about every other possible channel nearby. WiFi should be considered as an addition not a replacement for wired ethernet, but if you need such high WiFi throughput that a 40MHz channel is required, then use 5GHz instead where it doesn't have such a negative impact on other nearby networks.

I have about 20 access points around that I pickup and run my access point at 40MHz channel width but I did an analysis of the channels/traffic in use and found that there was little between channels 2 and 5 so opted for channel 3 and it's sweet.

Why are you running 40MHz?

In that sort of environment I can pretty much guarantee that 20MHz will deliver you significantly better throughout and overall performance than 40MHz.

I have about 20 access points around that I pickup and run my access point at 40MHz channel width but I did an analysis of the channels/traffic in use and found that there was little between channels 2 and 5 so opted for channel 3 and it's sweet.

Why are you running 40MHz?

In that sort of environment I can pretty much guarantee that 20MHz will deliver you significantly better throughout and overall performance than 40MHz.

This is from extensive testing at both 20MHz and 40MHz, 40MHz just works better for me - perhaps it's just the result of the particular access point with my wireless card in my ThinkPad.

But I do agree on 20MHz if you're suffering constant disconnects as that will help stability.

RunningMan: Running a 2.4GHz AP at 40MHz is IMO inconsiderate in an urban area. The channel width is so wide it can knock out just about every other possible channel nearby. WiFi should be considered as an addition not a replacement for wired ethernet, but if you need such high WiFi throughput that a 40MHz channel is required, then use 5GHz instead where it doesn't have such a negative impact on other nearby networks.

Running 2.4GHz at high power is more inconsiderate IMHO. I use a medium power setting which is just enough to cover the area of my house.

True, wifi is not a replacement for wired but some devices are wireless only so there's not much choice in that instance.

I'm quite happy on 2.4GHz currently but if you want to give me your bank details I will quite happily move to 5GHz - about $600 should cover the access point and replacement cards for laptops and PC etc...